GB1468306A - Magnification changing device - Google Patents

Magnification changing device

Info

Publication number
GB1468306A
GB1468306A GB5554674A GB5554674A GB1468306A GB 1468306 A GB1468306 A GB 1468306A GB 5554674 A GB5554674 A GB 5554674A GB 5554674 A GB5554674 A GB 5554674A GB 1468306 A GB1468306 A GB 1468306A
Authority
GB
United Kingdom
Prior art keywords
lenses
dec
changing device
magnification changing
magnificcations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5554674A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Minolta Co Ltd
Original Assignee
Minolta Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minolta Co Ltd filed Critical Minolta Co Ltd
Publication of GB1468306A publication Critical patent/GB1468306A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/14—Mountings, adjusting means, or light-tight connections, for optical elements for lenses adapted to interchange lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/02—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/02—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective
    • G02B15/04—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective by changing a part
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/34—Means for automatic focusing therefor
    • G03B27/36—Means for automatic focusing therefor by mechanical connections, e.g. by cam, by linkage
    • G03B27/40—Means for automatic focusing therefor by mechanical connections, e.g. by cam, by linkage adapted for use with lenses of different focal length
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/522—Projection optics
    • G03B27/523—Projection optics for full time exposure
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/041—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with variable magnification

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Lens Barrels (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Lenses (AREA)
GB5554674A 1973-12-22 1974-12-23 Magnification changing device Expired GB1468306A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1974002168U JPS5092238U (nl) 1973-12-22 1973-12-22

Publications (1)

Publication Number Publication Date
GB1468306A true GB1468306A (en) 1977-03-23

Family

ID=11521823

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5554674A Expired GB1468306A (en) 1973-12-22 1974-12-23 Magnification changing device

Country Status (11)

Country Link
US (2) US3936150A (nl)
JP (1) JPS5092238U (nl)
AU (1) AU7654074A (nl)
BE (1) BE823407A (nl)
BR (1) BR7410689D0 (nl)
CA (1) CA1023984A (nl)
DE (1) DE2460074C3 (nl)
ES (1) ES433201A1 (nl)
FR (1) FR2255628B1 (nl)
GB (1) GB1468306A (nl)
NL (1) NL7416201A (nl)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053221A (en) * 1975-10-14 1977-10-11 Xerox Corporation Multi-mode reproducing apparatus
JPS544983Y2 (nl) * 1975-11-21 1979-03-03
US4076417A (en) * 1976-05-03 1978-02-28 Xerox Corporation Interlocking apparatus for an optical system and reproducing machine
US4118118A (en) * 1976-05-07 1978-10-03 Universal Photocopy, Inc. Electrostatic copier machine with selectable magnification ratios
US4057342A (en) * 1976-05-27 1977-11-08 Xerox Corporation Illumination slit for a reproducing machine
JPS57108854A (en) * 1980-12-25 1982-07-07 Toppan Printing Co Ltd Method for checking original plate films and its apparatus
WO1990004197A1 (en) * 1988-10-07 1990-04-19 Eastman Kodak Company Camera view finder
US4933694A (en) * 1988-10-07 1990-06-12 Eastman Kodak Company Camera view finder
US4931818A (en) * 1988-10-07 1990-06-05 Eastman Kodak Company Camera view finder
US5798515A (en) * 1996-04-03 1998-08-25 Symbol Technologies, Inc. Optical scanner with fast zoom capability and scanning system
US5883727A (en) * 1997-05-06 1999-03-16 Tsai; Shui Chuan Multiple resolution image scanning module
US6678074B1 (en) * 2000-10-06 2004-01-13 Umax Data Systems, Inc. Changeable resolution apparatus and method for optical scanner

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985070A (en) * 1957-09-23 1961-05-23 Lane Erik Lennart Field glass having displaceable ocular lens
US3600066A (en) * 1969-06-02 1971-08-17 Xerox Corp Optical assembly with supplemental lens means

Also Published As

Publication number Publication date
USRE30231E (en) 1980-03-18
FR2255628B1 (nl) 1977-11-10
DE2460074C3 (de) 1980-11-27
AU7654074A (en) 1976-06-17
ES433201A1 (es) 1976-12-01
DE2460074B2 (de) 1980-04-03
JPS5092238U (nl) 1975-08-04
BR7410689D0 (pt) 1975-09-02
DE2460074A1 (de) 1975-07-03
US3936150A (en) 1976-02-03
FR2255628A1 (nl) 1975-07-18
CA1023984A (en) 1978-01-10
NL7416201A (nl) 1975-06-24
BE823407A (fr) 1975-04-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee